Top 30 JavaScript Development Companies in Helsinki
The Best of December 2025Looking for a top JavaScript developer in Helsinki?
If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. Disadvantages to consider include security such as bugs on the client-side.
To assist you in your search for a partner, we’ve compiled this list of the top JavaScript development agencies in Helsinki. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Helsinki JavaScript Developers
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1$25,000+250 - 999 employeesOslo, NorwayAltoros is a midsize Blockchain company. Founded in 2001, the firm is based in Pleasanton, California; Buenos Aires, Argentina; Oslo, Norway and Helsinki, Finland. Their team offers Blockchain, Custom Software Development, Web Development, Enterprise App Modernization, and more.Read More
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AllstateIndustries
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2Undisclosed1,000 - 9,999 employeesHelsinki, FinlandRead More
Cybercom Group is a software development firm based in Warsaw, Poland with other offices in Lodz and Bydgoszcz, Poland, Tampere and Helsinki, Finland, and Stockholm and Gothenburg, Sweden. Established in 1997, they have 1185 employees that provide web development, custom software, mobile development, internet of things, and more.
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3$50,000+250 - 999 employeesHelsinki, FinlandEstablished in 2005, Siili Solutions is a web development company. Their midsize team is in Helsinki, Finland; Wrocław, Poland; Szczecin, Poland and Vaasa, Finland and provides Web Development, UX/UI Design, IT staff augmentation, Custom Software Development, and more.Read More
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4$5,000+10 - 49 employeesHelsinki, FinlandRead More
Sangre is a design and development company headquartered in Helsinki. Their team of fewer than 50 serves mostly midmarket businesses in industries such as e-commerce, business services, and healthcare. Services include mobile app, custom software, and web development, as well as UX/UI and web design. Founded in 2015, they have additional offices in Warsaw, Poland.
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Colosseum Dental GroupIndustries
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5$25,000+50 - 249 employeesHelsinki, FinlandCodemate is a web development company. Launched in 2007, their team focuses on Web Development and Mobile App Development.Read More
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6$10,000+50 - 249 employeesHelsingfors, FinlandRead More
IWA Ltd is a web services agency headquarted in Helsinki with offices in Tambon BanPed, Thailand and Abu Dhabi, United Arab Emirates. Founded in 2009, the team of 141 specializes in web development, mobile app development, and application management and support. They work primarily with midmarket and small businesses, focusing on real estate, transportation, arts, and entertainment and music.
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Likennevirta Oy/Virta LtdIndustries
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7$1,000+10 - 49 employeesHelsinki, FinlandHuipsov Oy is an IT staff augmentation company headquartered in Helsinki, Finland. They specialize in IT staff augmentation, Web Development, Mobile App Development, Custom Software Development, and more and were launched in 2024.Read More
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8$10,000+50 - 249 employeesHelsinki, FinlandRead More
IT strategy consulting company Wunderdog was founded in 2018. Their midsize team is based in Helsinki, Finland and Berlin, Germany. Wunderdog offers IT strategy consulting, custom software development, web development, IT staff augmentation, and more.
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9$1,000+10 - 49 employeesVantaa, FinlandSpexvel is a small Vantaa, Finland-based web development company. They provide Web Development, Search Engine Optimization, UX/UI Design, Mobile App Development, and more and were launched in 2023.Read More
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10$1,000+50 - 249 employeesRajshahi, BangladeshDevxhub, an IT staff augmentation company, is in Rajshahi, Bangladesh; Rajshahi, Bangladesh; Helsinki, Finland and Hopkins, Minnesota. They focus on IT staff augmentation, Custom Software Development, Web Development, Mobile App Development, and more and were launched in 2020.Read More
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11$10,000+50 - 249 employeesLecco, ItalyHalo Lab is a midsize branding agency headquartered in Dubai, United Arab Emirates; New York, New York; 08, Andorra and Odesa, Ukraine. They offer Branding, Web Design, UX/UI Design, Graphic Design, and more and were established in 2013.Read More
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Auth0Industries
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12$5,000+50 - 249 employeesHelsingfors, FinlandRead More
Based in Helsingfors, Finland and Stockholm, Sweden, Genero is a SEO services firm. The firm focuses on search engine optimization, pay per click, content marketing, conversion optimization, and more and is midsize.The firm was established in 2009.
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13$10,000+2 - 9 employeesHelsinki, FinlandThriv, a web development company, was launched in 2020. Based in Helsinki, Finland, the team offers Web Development and cloud consulting & SI.Read More
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14$10,000+2 - 9 employeesEsbo, FinlandADV Code Oy is a custom software development company and web development firm established in 2018. The company specializes in Custom Software Development and Web Development, and is small.Read More
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15$25,000+10 - 49 employeesHelsinki, FinlandSmall website development firm Fraktio, is in Helsinki, Finland. The team specializes in Web Development and UX/UI Design.Read More
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16Undisclosed2 - 9 employeesHelsinki, FinlandDigital Strategy company Alpha Alias is headquartered in Helsinki, Finland. They provide Digital Strategy and Web Design and were established in 2018.Read More
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17$1,000+2 - 9 employeesHelsinki, FinlandFounded in 2020, Superbrain Oy is a software development firm and website development company. Their services include Custom Software Development and Web Development.Read More
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18$10,000+10 - 49 employeesHelsinki, FinlandExtreme Consulting Ltd, a web design company, is headquartered in Helsinki, Finland and Sofia, Bulgaria. They specialize in Web Design and CRM consulting and SI.Read More
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19$10,000+10 - 49 employeesHelsinki, FinlandStoryWorks Studio is a web design company launched in 2019. The team focuses on Web Design and UX/UI Design and is in Helsinki, Finland.Read More
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20$5,000+2 - 9 employeesHelsingfors, FinlandKokku is a web design company. Their small team is headquartered in Helsingfors, Finland. Their services include Web Design and Web Development.Read More
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21$10,000+10 - 49 employeesHelsinki, FinlandRead More
Software Sauna is a software development house founded in 2018. Based in Zagreb, Croatia, they employ 13 industry professionals who provide full-stack software development for mobile and web platforms. They work with a variety of small and large-scale businesses.
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Efecte PlcIndustries
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22$1,000+2 - 9 employeesVantaa, FinlandHelpotkotisivut.fi, a SEO agency, specializes in Search Engine Optimization and Conversion Optimization. The firm is based in Vantaa, Finland.Read More
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23$5,000+10 - 49 employeesHelsinki, FinlandMontel Intergalactic is a cloud consulting & SI company. They offer cloud consulting & SI and Custom Software Development and are located in Helsinki, Finland and Neuquen, Argentina.Read More
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24$10,000+10 - 49 employeesHelsinki, FinlandCoredo is a Helsinki, Finland-based Digital Strategy company. Established in 2014, the team specializes in Digital Strategy and Web Design.Read More
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25Undisclosed2 - 9 employeesHelsinki, FinlandPx8 Studio is a web design company. Established in 2015, the firm is based in Helsinki, Finland. Their team offers Web Design and Web Development.Read More
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26$50,000+50 - 249 employeesHelsinki, FinlandFounded in 2008, PHZ Full Stack Oy is a midsize software development firm. Their team specializes in Custom Software Development and cloud consulting & SI.Read More
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27Undisclosed2 - 9 employeesHelsinki, FinlandContent Marketing company Prami Growth Agency is headquartered in Helsinki, Finland. Their services include Content Marketing and Digital Strategy.Read More
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28$1,000+2 - 9 employeesVeikkola, FinlandHD SofT - koodarivälitys is an Email Marketing company founded in 2006. The agency specializes in Email Marketing and Conversion Optimization, and is small.Read More
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29$10,000+10 - 49 employeesEspoo, FinlandBesco software is an app development company. They are based in Espoo, Finland. Their team offers Mobile App Development and IoT development.Read More
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30Undisclosed250 - 999 employeesTallinn, EstoniaFounded in 2015, Unikie, a midsize software development company, is located in München, Germany and Tampere, Finland. Their services include Custom Software Development and Web Development.Read More
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